Castle Apts
Multifamily Housing in Seattle, WA · 2132 2ND AVE · 98121
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 43.3 kBtu/ft² |
| Source EUI | 78.6 kBtu/ft² |
| GHG emissions | 46 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 181,493 kWh |
| Natural gas | 8,006 therms |
| Gross floor area | 32,760 sq ft |
| Source record | seattle:21104:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 95 | -4 | 43.3 kBtu/ft² | 46 tCO₂e |
| 2024 | 99 | +2 | 34.2 kBtu/ft² | 32 tCO₂e |
| 2023 | 97 | +10 | 37.3 kBtu/ft² | 35 tCO₂e |
| 2022 | 87 | 52.2 kBtu/ft² | 57 tCO₂e | |
| 2021 | — | — | 4 tCO₂e | |
| 2020 | 95 | -2 | 39.5 kBtu/ft² | 36 tCO₂e |
| 2019 | 97 | ±0 | 36.5 kBtu/ft² | 34 tCO₂e |
| 2018 | 97 | ±0 | 36.8 kBtu/ft² | 34 tCO₂e |
| 2017 | 97 | -1 | 37.4 kBtu/ft² | 35 tCO₂e |
| 2016 | 98 | +3 | 32.0 kBtu/ft² | 27 tCO₂e |
| 2015 | 95 | 39.0 kBtu/ft² | 39 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 2132 2ND AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61334, -122.34394
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Castle Apts's energy grade?
Castle Apts scores 95 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Castle Apts use?
Its 2025 site energy-use intensity was 43.3 kBtu/ft² (78.6 kBtu/ft² source) across 32,760 sq ft, including 181,493 kWh of electricity and 8,006 therms of natural gas.
What are Castle Apts's carbon emissions?
Castle Apts reported 46 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2025. Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
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Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:21104:2025.